1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 
 4 */
 5
 6#ifndef __UM_THREAD_INFO_H
 7#define __UM_THREAD_INFO_H
 8
 9#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
10#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
11
12#ifndef __ASSEMBLY__
13
14#include <asm/types.h>
15#include <asm/page.h>
16#include <asm/segment.h>
17#include <sysdep/ptrace_user.h>
18
19struct thread_info {
20	struct task_struct	*task;		/* main task structure */
21	unsigned long		flags;		/* low level flags */
22	__u32			cpu;		/* current CPU */
23	int			preempt_count;  /* 0 => preemptable,
24						   <0 => BUG */
 
 
 
25	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
26	unsigned long aux_fp_regs[FP_SIZE];	/* auxiliary fp_regs to save/restore
27						   them out-of-band */
28};
29
30#define INIT_THREAD_INFO(tsk)			\
31{						\
32	.task =		&tsk,			\
33	.flags =		0,		\
34	.cpu =		0,			\
35	.preempt_count = INIT_PREEMPT_COUNT,	\
 
36	.real_thread = NULL,			\
37}
38
 
 
 
 
39/* how to get the thread information struct from C */
40static inline struct thread_info *current_thread_info(void)
41{
42	struct thread_info *ti;
43	unsigned long mask = THREAD_SIZE - 1;
44	void *p;
45
46	asm volatile ("" : "=r" (p) : "0" (&ti));
47	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
48	return ti;
49}
50
 
 
51#endif
52
53#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
54#define TIF_SIGPENDING		1	/* signal pending */
55#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
56#define TIF_NOTIFY_SIGNAL	3	/* signal notifications exist */
57#define TIF_RESTART_BLOCK	4
58#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
59#define TIF_SYSCALL_AUDIT	6
60#define TIF_RESTORE_SIGMASK	7
61#define TIF_NOTIFY_RESUME	8
62#define TIF_SECCOMP		9	/* secure computing */
63#define TIF_SINGLESTEP		10	/* single stepping userspace */
64
65#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
66#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
67#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
68#define _TIF_NOTIFY_SIGNAL	(1 << TIF_NOTIFY_SIGNAL)
69#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
70#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
71#define _TIF_SECCOMP		(1 << TIF_SECCOMP)
72#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
73
74#endif

 
 1/*
 2 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 4 */
 5
 6#ifndef __UM_THREAD_INFO_H
 7#define __UM_THREAD_INFO_H
 8
 
 
 
 9#ifndef __ASSEMBLY__
10
11#include <asm/types.h>
12#include <asm/page.h>
13#include <asm/segment.h>
 
14
15struct thread_info {
16	struct task_struct	*task;		/* main task structure */
17	unsigned long		flags;		/* low level flags */
18	__u32			cpu;		/* current CPU */
19	int			preempt_count;  /* 0 => preemptable,
20						   <0 => BUG */
21	mm_segment_t		addr_limit;	/* thread address space:
22					 	   0-0xBFFFFFFF for user
23						   0-0xFFFFFFFF for kernel */
24	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
 
 
25};
26
27#define INIT_THREAD_INFO(tsk)			\
28{						\
29	.task =		&tsk,			\
30	.flags =		0,		\
31	.cpu =		0,			\
32	.preempt_count = INIT_PREEMPT_COUNT,	\
33	.addr_limit =	KERNEL_DS,		\
34	.real_thread = NULL,			\
35}
36
37#define init_thread_info	(init_thread_union.thread_info)
38#define init_stack		(init_thread_union.stack)
39
40#define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
41/* how to get the thread information struct from C */
42static inline struct thread_info *current_thread_info(void)
43{
44	struct thread_info *ti;
45	unsigned long mask = THREAD_SIZE - 1;
46	void *p;
47
48	asm volatile ("" : "=r" (p) : "0" (&ti));
49	ti = (struct thread_info *) (((unsigned long)p) & ~mask);
50	return ti;
51}
52
53#define THREAD_SIZE_ORDER CONFIG_KERNEL_STACK_ORDER
54
55#endif
56
57#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
58#define TIF_SIGPENDING		1	/* signal pending */
59#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
 
60#define TIF_RESTART_BLOCK	4
61#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
62#define TIF_SYSCALL_AUDIT	6
63#define TIF_RESTORE_SIGMASK	7
64#define TIF_NOTIFY_RESUME	8
65#define TIF_SECCOMP		9	/* secure computing */
 
66
67#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
68#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
69#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
 
70#define _TIF_MEMDIE		(1 << TIF_MEMDIE)
71#define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
72#define _TIF_SECCOMP		(1 << TIF_SECCOMP)
 
73
74#endif